Belshaw Brothers TG 50 manual Conveyor will not run, S/N 4000480 and Below, Conveyor speed

Conveyor will not run	Fan Switch	Check continuity between switch terminals. Replace
S/N 4000480 and Below		as needed.
	Conveyor Control	Check for supply voltage at primary of transformer. If
	Transformer	no voltage is present, trace wiring back to fan switch.
		Check for 24VAC at transformer secondary. If no
		voltage is present, replace transformer.
	Speed Adjustment	This is a 5K ohm potentiometer. WITH POWER OFF:
	Potentiometer	Remove the leads from the motor control board at
		terminals P1, P2, P3. With a digital meter, check the
		ohm reading across the red and black leads. This
		reading should be 5K ohms (± 10%) as the pot. is
		rotated from low to high. Place meter leads on red
		and white lead. Rotating the pot. slowly from low to
		high, the meter reading should show an even
		transition from 0 to 5K ohms (± 10%). There should
		be no dead or open spots throughout the rotation of
		the pot. Check all three (3) leads to ground. There
		should be no continuity to ground. If any of the above
		checks fail, replace the pot.
	Conveyor Control Board	Check for 24 VAC input to conveyor control. If no
		voltage is present, trace wiring back to transformer. If
		voltage is present at L1 and L2, check for D.C. output
		at terminals A+ and A-. If there is AC voltage input,
		but no D.C. voltage output, replace conveyor control
		board.
	Conveyor Gear Motor	If there is D.C. voltage output from the conveyor
		control, but the motor does not run, check the mini-
		breaker (0.7 Amp). Check motor leads for opens,
		shorts or continuity to ground. If motor fails above
		test, replace motor.
	Conveyor	Check conveyor drive coupling to be sure that it is
		tight. Also check to see that coupling is engaged with
		conveyor drive shaft. Check for any mechanical
		misalignment or improper adjustment, also check for
		worn bearings. A conveyor belt that is too tight will
		cause excessive bearing wear and sometimes-
		irregular speed.
Conveyor speed	Power Supply	Check for steady supply voltage to oven. If voltage is
varying or intermittent		unsteady, contact power company.
	Transformer	Check for steady A.C. voltage output from transformer
		and replace as needed.
	Conveyor Control	Check for steady D.C. voltage output from conveyor
		control. If D.C. voltage output is unsteady, check
		conveyor potentiometer (see "Speed Adjustment
		Potentiometer" under Conveyor will not run). If the
		potentiometer checks good, and the D.C. voltage is
		unsteady, replace conveyor control.
	D.C. Gearmotor	Check motor brushes for excessive arching and/or
		unusual wear. Replace brushes or gearmotor as
		needed.

November 1999 33 COUNTER TOP IMPINGER